006e_generate_ros_config_on_worker_command.sh

#!/bin/bash

# Checking if host is aleady part of a swarm
swarm_status=$(docker info  2> /dev/null | grep -E "^[[:space:]]*Swarm:[[:space:]]*.?.?active" \
    | awk -F":" '{ print $2 }' | tr -d [:blank:]) 

if [ "$swarm_status" = "inactive" ]; then
    echo "[STOPPING] THIS HOST ISN'T PART OF A SWARM?!?!"
    exit -1
fi


if  docker swarm ca > /dev/null 2>&1; then
    echo "[STOPPING] This machine is the master?!?!"
    exit -1
fi


read -p "Please supply the worker container name: " container_name
    
if ! docker container inspect $container_name> /dev/null 2>&1; then
    echo "[STOPPING] CONTAINER ISN'T RUNNING?!?!"
    exit -1
fi

IP=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $container_name)
> ./Commands/bin/set_swarm_settings.bash
echo "export ROS_HOSTNAME=$IP" >> ./Commands/bin/set_swarm_settings.bash 
echo "export ROS_IP=$IP" >> ./Commands/bin/set_swarm_settings.bash
    
read -p "IP on overlay network of the master container: " master_ip
echo "export ROS_MASTER_URI=http://$master_ip:11311" >> ./Commands/bin/set_swarm_settings.bash